[問題] F分配求信賴區間的上界

看板Statistics作者時間17年前 (2009/02/14 21:22), 編輯推噓0(002)
留言2則, 2人參與, 最新討論串1/2 (看更多)
是研究所考古題 和室友兩人研究許久後仍不得其法 希望有先進能指點一二^^ 93台大商研 Let X and Y equal the concentration in parts per billion of chromium in the blood for healthy persons and for persons with a suspected disease, repectively. Assume that the diftribution of X and Y are N(μ_x, σ^2_x) and N(μ_y, σ^2_y). Using n=8 observationsof X: 15, 23, 12, 18, 9, 28, 11, 10 and m=10 observations of Y:25, 20, 35, 15, 40, 16, 10, 22, 18, 32. Find a one sided 95% condifence interval that is an upper bound for σ^2_x/σ^2_y -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.119.139.127

02/14 21:30, , 1F
[(S1^2/S2^2)*F0.05(7,9),(S1^2/S2^2)*F0.05(9,7)]
02/14 21:30, 1F

02/15 20:26, , 2F
謝謝你喔^^
02/15 20:26, 2F
文章代碼(AID): #19biLzYz (Statistics)
文章代碼(AID): #19biLzYz (Statistics)